Microsoft skipped over Release Preview with Windows 10 version 1809, and four days later, the update was pulled from Windows Update. This was mainly due to some users’ files being deleted upon upgrading. Moreover, it turned out that the issue had been reported to the Feedback Hub, but it hadn’t been upvoted enough times for anyone to notice.
The company published a blog post a few days after that, explaining the issue and saying that you’ll now be able to indicate severity of a bug in a Feedback Hub report. There was a slight apology, and a sign that Microsoft will do at least the bare minimum to make sure that this doesn’t happen again.
Microsoft hasn’t said a word about it since.
Not a good few weeks for Windows Update and related services.